Meta Platforms Technologies

An apparatus may comprise (1) a battery pack dimensioned for installation in a device, (2) a set of electrical contacts coupled to the battery pack, and (3) a plate that is (A) coupled to the battery pack and (B) equipped with one or more alignment features dimensioned to facilitate aligning the set of electrical contacts with a counterpart set of electrical contacts incorporated in the device. Various other apparatuses, devices, systems, and methods are also disclosed.

A display system includes an illumination source configured to emit light, a lens having a curved surface, and a holographic optical element having a vision correction prescription of a user disposed over the curved surface of the lens to form a diffractive-refractive surface, where the light emitted from the illumination source is redirected by the diffractive-refractive surface to form a virtual image to be viewed by the user, the light incorporating the vision correction prescription.

An example band portion of a wrist-wearable device includes a flexible printed circuit (FPC) board, a mounting plate, a structural component coupled to a capsule portion of the wrist-wearable device, and one or more electrodes. The one or more electromyography sensors each include one or more electrodes configured to couple to the FPC board. The wrist-wearable device also includes a strain relief layer coupled to the FPC board. A first portion of the strain relief layer is configured to secure the mounting plate within the strain relief layer and the mounting plate includes at least one recess for engaging the mounting plate with a structural component of the band portion, the mounting plate configured to couple the strain relief layer to the structural component.

A computer-implemented method is provided for operating a near-eye display that uses a single image panel divided into left-eye and right-eye regions, each with independently controllable illumination subsystems. The method includes driving the near-eye display, sensing an operating condition of the display, determining for each of the left- and right-eye regions an illumination window based at least in part on a refresh state of that region and the operating condition, and commanding the illumination subsystems to emit during the determined illumination windows while coordinating per-region emission timing to satisfy inter-ocular alignment and mitigate display-induced motion artifacts. Various other aspects are also disclosed.

A micro-LED includes a mesa structure and a tapered dielectric waveguide. The mesa structure includes a quantum well region disposed between an n-doped semiconductor layer and a p-doped semiconductor region. The n-doped semiconductor layer forms a tapered semiconductor pre-waveguide. The tapered dielectric waveguide has a lower refractive index than a higher refractive index of the tapered semiconductor pre-waveguide.

The disclosed mixed-reality display may include an optical system dimensioned to project a mixed-reality image to a user such that an angle of projection determines a region hidden from a peripheral view of the user. The mixed-reality display may also include one or more hardware components electronically coupled to the optical system and dimensioned to fit within the region such that the one or more hardware components are hidden from the user. Additionally, the mixed-reality display may include a frame coupled to hold the optical system and the one or more hardware components, wherein a rim of the frame is dimensioned to fit within the region. Various other apparatuses, systems, and methods of manufacturing are also disclosed.

A display device of the subject technology comprises a thin-film-transistor (TFT) layer formed on a substrate and a first layer formed over or under the TFT layer. The TFT layer reflects back unwanted color components of a light produced by a backlight unit (BLU). The display device further includes a second layer to selectively transmit desired colors of the light produced by the BLU to a liquid crystal (LC) layer. The reflected back unwanted color components are recycled to the BLU to reduce a portion of a loss of brightness due to absorption by the second layer.

Systems, methods, and devices, and computer program products are provided for hinge modules for smart glasses systems, and overextension hinge modules usable with one or more electronic components. In an example, an overextension hinge module may include a hinge base, a paddle connected to the hinge base via a travel pin, and a preloaded spring maintaining a base position between the hinge base and the paddle, allowing movement of the hinge base relative to the paddle along a predefined range. Various examples may include a primary pivot axis defining movement between a frame arm attached to a glasses frame, and an external pivot axis along an outer edge of the frame arm defining an over-extension of the pivot arm relative to the frame.

In some examples, a device may include a network interface wirelessly connected to a cellular network, one or more memories, and one or more processors. The one or more memories may store a network stack including an application layer and a lower layer lower than the application layer. The one or more processors may determine, based at least on first data obtained via the network interface or from the lower layer, that at least one of cell loading or network congestion is present. The one or more processors may adjust, based at least on the first data, one or more operations at the application layer to generate one or more frames. The one or more processors may wirelessly transmit, via the network interface, the one or more frames.

An apparatus of the subject technology includes a speaker to receive audio signals and to generate a soundwave output, and an output port to provide the soundwave output to a user. The apparatus further includes an enclosure containing the speaker and a cavity formed between the speaker and the output port, and an acoustic damping medium placed in the cavity and configured to cancel acoustic standing waves.